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1. Visit <a data-path="/viewer_interlink_frame/interlink_frame.py">interlink_frame.htz</a>.

2. Click the link in the main window, and the iframe should be redirected to a new page. Click the back button afterwards.

3. Click the "_self" link in the iframe, and the iframe should be redirected to a new page. Click the back button afterwards.

4. Click the "_parent" link in the iframe, and the main window should be redirected to a new page. Click the back button afterwards.

5. Click the "_parent" link in the iframe, and the main window should be redirected to a new page. Click the back button afterwards.

6. Click the "_blank" link in the iframe, and a new window of blob: URL should be opened.

7. Click the "_blank" link in the iframe again, and a new window of blob: URL should be opened.

8. Click the "foo" link in the iframe, and a new window of blob: URL should be opened.

9. Click the "foo" link in the iframe again, and the previous window should be redirected.

10. Click the link in the second iframe, and the main window should be redirected.

11. Click the link in the third iframe, and the iframe should be redirected to a page at example.com.
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